Method of making artificial stone



Jan. 5 1926.

w. H. JENNENS METHOD OF MAKING ARTIFICIAL STONE Filed April 5 A TTORNEY PATENT. oF-ncs.

ILLIA H. .mmmns, or Kansas our, Mrssoum.

1imrrron or MAKING hammer. STONE.

Application filed aim a, 1925. Serial No. 20,452.

T all whom it may concern."

Be it known that I, WILLIAM H. JEN-- arms, a citizen of the United States, residing at .Kansas. City, in the county of J ackson and State of Missouri, have invented a certain new and useful Im rovements in Methods of Making Artificial Stone; and

I do declare the following to bea full, clear,

. and exact description of the'invention, such as will enable others skilled in the art to which it ap'pertains to make and use the same, reference being had to the accompanying drawings, andto the figures of reference marked thereon, which form'a part of this application.

This invention relates to the manufacture of artificial stone and it has to do particularly with the manufacture of an article simulating travertine found in Italy.

The original stone somewhat resembles unpolished' marble :in" thatit is provided with Stratification and nodules, the surface,

of the stone having recesses somewhat resembling worm-eaten wood.

The artifici 1 stone manufactured by the method hereinafter described yer-1y; accu rately simulates the originah and t e various steps followed in carrying. out my process will be full described hereinafter, reference being v ad to the accompanying drawings, in which Fig. .1 is a through a moul adapted for use in connection with my invention showing the flexible member for applying the 'stratification color. 3

Fig. 2 shows the plied, the nodules and the'gas forming ma;' terial. e d

Fig. 3 is a similar view showing the oc- -mentitious material applied.

Fig. 4 is a like view showing the recesses formedby the gas-forming material, and

Fig. 5 is a perspective view of the finished 7 product.

In carrying out the invention the mould first receives the stratifying material. The fiat floor 1 of the mould maybe provided with an edge wall 2 extending entirely around it, although the edge wall 2 is not absolutely essential.

The floor 1 of the mould is preferably greased, then the operator applies the stratifying color as shown in Fig. 1. A convenient method of applying the stratifying color is to mix the color in a receptacle to (perspective, sectional view Stratification color apthe proper'consistency, tha't is, toabout the consistency of thick paint. Then immerse a strin or cord in the color and by taking hold o the ends of the string, as shown in Fig. 1, the string can be laid upon the upper surface of the bottom of the mould in a haphazard manner so that the color will be-deposited from the string to the mould in an irregular line. 'It is better if the color adheres to some parts of the string more than to the other as it is not desired to have a sharp stratifying line. After the stratifying color is applied, small particles or nodules are spattered or sprinkled between the stratifications onto the mould. The-nodules may be of different color from the stratifications. Any proper means may be employedbut a convenientway of ap plying the nodules is to dip a brush. or

whist-broom into a liquid color and flick the ends of the bristlesor straws so that the color will spatter, like small raindrops, upon the surface of the mould floor. Then a gas forming material is sifted over the surface of the mould. Bicarbonate of soda may be used although, obviously, other forms of gas forming powders maybe used.

When the gas forming material has been applied, the mould is'ready to receive the cementitiousmaterial which is applied in a plastic state, as shown in Fig. 3. The cementitious material is lightly spread over the surface of the mould and then a dry material is applied to take up the excess moisture 1n t e plastic cement and to seal any capillaries andfvoi'ds formed by the gas forming material in the plastic cement;

this sealing being important for otherwise the gas formed-by the bi-earbonate of soda and acidulatedwater would escape through the cementitious material unless the upper surface of the eementitious material was sealed ofi. Bysealing off the upper surface of the cementitious slab or layer the gas formed by the gas-formingematerial. and water will make little cells in the. surface of the layer ad'acent to the mould floor.

The slab may t on be backed up with a woodenpanel or other reinforcement if desired.

The string designated 3 may be of any suitable material. By placing it u on the floor, the stratific'ations 4 are forme The nodules 5 and the gas-forming powder 6 are shown, as nearly as they can be illustrated, in Fig. 2. The'batch or layer 7 of cementiof material to the surface tious material is shown in 3. The d material 8 is illustrated in Flg. 4 althoug its thickness is somewhat exaggerated. In

Fig. 4 it will also be seen that the cells 9 formed by the gas-forming material and water are irregular, but so they arein the original travertine found in Ital In Fig. 5 I have shown the finished slab, designated 10,- with the stratification representations 11 corresponding to the Stratifications4. The cells 9 are shown as are also the nodules 5. The stratifications, cells and nodules are-somewhat exaggerated in Fig. 5 but in actual practice. the stratifications blend off just as is found in the, original stone.

The finished product very closely resembles the origina travertine. It is eas to manufacture and may be made of uniform quality, and wherever desired, special colors may be used althou h I recommend the use of grayish white co or for the body' as this more closely approximates the original travel-tine. I

The time that the 'slab is required to set may vary slightly but this can easily be determined 1) experiment. If in doubt it is better to a low a longer time because too much time will not be at all detrimental to the finished roduct.

What Icaimand d Letters-Patent is: y

1. The method of making artificialstone, which consists in depositing upon asurface, a plurality of irregular narrow layers of material to simulate veins, a plying small fractions of material u n the surface to provide nodules, applying a; gash-forming material upon the surface, applying a plastic cementltious material on top of the surface and upon top of the previously deposited material, scaling the outer surfaceof the cementitious material. l

2. The method of making artificial stone, which consists in depositing upon-a surface, a plurality of irregular thm narrow layers of material to simu ate veins, applying drops 7. between the veins, applying a gas-forming. material to the surface, applying a layer of'cementi'tious ma-I terial to the surface ofsuflicient thickness to secure by.

' to form the body of the artificial stone, sealing the outer surface of the layer, and allowing the mass to set.

3. The method of making artificial stone, which consists in providing a mould with a prepared surface, de slting a veining substance uponthe su ace, applying a gasforming medium upon the surface, applying a cementitious ayer upon the surface to co-mingle with the material previously applied, and sealing the outer surface'of the said body.

4. The method of making artificial stone, which consistsin providing a mould floor, depositing a veining substance upon the floor, applying agas-fonning medium upon the floor, applying wet cement upon the floor to provide a layer of a thickness substantially equal to the thickness of the finished'product, and sealing the exposed face of the layer.

' 5. Themethod of making artificial stone, which consists in applying veining material to a surface, apply spotting material to the surface between t e veins to form nodules, applying gas-forming material to the surface applying cementitious material on top of the previously desposited material and on the surface, and sealing the outer. face of the layer.

6. The method of making artificial stone, which consists in applying veining material to a surface,apply1n spotting material to the surface between t e veins to form nodules, applying a gas-forming materialto the surface, applying cementitious material on top of the reviouslydepo'sited material and on the sur ace, andseahng the outer face of the layer with dry powder.

7. The method of making artificial travertine which consists in de ositi'ng upon a surface, aplurality of irregu ar narrow layers of material to simulate veins, applyin small fractions of material upon the surilce to provide nodules, applying a gas-forming material upon the surface,apply1ng a plastic cementitious material on .to of the surface and upon to of the previously deposited material, sea ing the outer surface ,of the cementitious material.

In testimony whereof I afiix my signature.

.. p [WILLIAM H. JEN ENS. 

